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Circular No. 7853 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions) CBAT@CFA.HARVARD.EDU (science) URL http://cfa-www.harvard.edu/iau/cbat.html ISSN 0081-0304 Phone 617-495-7440/7244/7444 (for emergency use only) SUPERNOVA 2002br IN MCG +03-27-61 M. Armstrong, Rolvenden, England, reports his discovery of an apparent supernova (mag 17.1) on a 30-s unfiltered CCD image (limiting mag 18.5) taken on Mar. 9.970 UT with a 0.30-m Schmidt- Cassegrain reflector in the course of the U.K. Nova/Supernova Patrol. The new object is located at R.A. = 10h34m08s.92, Decl. = +19o42'20".5, which is 5" north and 5" east of MCG +03-27-61. An image taken by T. Boles, Coddenham, England, on Mar. 13.843 shows the new object still at mag 17, and at position end figures 08s.92, 21".3. The new object is not present on Armstrong's images from 2000 Nov. 24, 2002 Jan. 17, Feb. 15, and Mar. 1, neither is it present on Palomar Sky Survey images taken on 1996 June 19 (limiting blue mag 22.5) and 1998 Jan. 2 (limiting red mag 20.8). COMETS C/1998 A2, C/1998 A3, C/1999 M3, C/2000 B8 (SOHO) Further to IAUC 7850, D. Hammer reports his measurements for four additional comets found by R. Kracht (1998, 1999 comets) and M. Meyer (C/2000 B8) on C2 coronagraph images posted at the SOHO website. The reduced astrometry and orbital elements by B. G. Marsden appear on the MPECs cited below; the 1998 and 1999 objects appear to belong to the Marsden group (cf. IAUC 7832), while the 2000 object is a member of the Meyer group. Comet 1998 UT R.A. (2000) Decl. MPEC C/1998 A2 Jan. 3.880 18 54.5 -21 54 2002-E25 C/1998 A3 9.464 19 19.9 -21 14 2002-E25 Comet 1999 UT R.A. (2000) Decl. MPEC C/1999 M3 June 30.396 6 29.6 +23 32 2002-E18 Comet 2000 UT R.A. (2000) Decl. MPEC C/2000 B8 Jan. 16.704 19 56.5 -19 59 2002-E25 NOVA IN THE LARGE MAGELLANIC CLOUD 2002 Additional photometry (cf. IAUC 7847) by A. C. Gilmore at Mount John Observatory: Mar. 11.514 UT, V = 12.04, U-B = -0.85, B-V = +0.14, V-R = +0.57, V-I = +0.85, airmass 1.43. (C) Copyright 2002 CBAT 2002 March 14 (7853) Daniel W. E. Green
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